This model is a re-design of the previous “L” model. New keys were added to move the carriage, clear the Registers, and begin operations. For the first time, we can see in the product advertising the statement “Scientifically planned keyboard and control keys, with power operation of all functions“. It is also pointed out that the design is made in order to work with only one hand, either for right-handed or left-handed people. The keys have a square or rectangular shape and get rid of the old round keys.
The great improvement, with regard to the arithmetic operations, is the user-friendliness of negative values, in particular fully automatic positive and negative division, with button for optional stop before completion. The knobs, in the upper part of the carriage, allow direct setting of dividends when using constant divisor.
The shift-keys enable easily the operator to choose into which dials of the Register I the number set on the keys is added or from what dials it is subtracted. Multiplication is still performed semi-automatically by means of a sequence of carriage shifts and additions (or subtractions).
“Register I” shows 16 digits, “Register II” and “Register III” show 8 digits each.